Treadmill



FIG. 1 is a front, top and right side perspective view of a treadmill,showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines are for the purpose of illustrating portions of thearticle that form no part of the claimed design.

CLAIM The ornamental design for a treadmill, as shown and described.